Turismo Matemático is five years old

Happy birthday to Turismo Matemático, a happy little blog which has been posting pictures of mathematical objects around the world for five years now. It’s one of my favourite maths blogs; if you weren’t already aware of it, now’s as good a time as any to go and have a look.

For the past couple of weeks, I’ve been obsessively playing the game Twenty on my phone. Then I decided to make my own game in a similar vein. The fact that my wife has consistently been ahead of my high scores has nothing to do with it.